themes-wordpress/block-canvas/style.css

/*
Theme Name: Block Canvas
Theme URI: https://github.com/Automattic/themes/tree/trunk/block-canvas
Author: Automattic
Author URI: https://automattic.com/
Description: Block Canvas is a simple theme that supports full-site editing. It comes with a set of minimal templates and design settings that can be manipulated through Global Styles. Use it to build something beautiful.
Requires at least: 6.0
Tested up to: 6.0
Requires PHP: 5.7
Version: 0.0.29
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: block-canvas
Tags: one-column, custom-colors, custom-menu, custom-logo, editor-style, featured-images, full-site-editing, block-patterns, rtl-language-support, theme-options, threaded-comments, translation-ready, wide-blocks

Block Canvas WordPress Theme, (C) 2022 Automattic, Inc.
Block Canvas is distributed under the terms of the GNU GPL.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/

/*
 * Control the hover stylings of outline block style.
 * Unnecessary once block styles are configurable via theme.json
 * https://github.com/WordPress/gutenberg/issues/42794
 */
.wp-block-button.is-style-outline>.wp-block-button__link:not(.has-background):hover {
	background-color: var(--wp--preset--color--secondary);
	color: var(--wp--preset--color--base);
	border-color: var(--wp--preset--color--secondary);
}

/*
 * Link styles
 * https://github.com/WordPress/gutenberg/issues/42319
 */
a {
	text-decoration-thickness: .0625em !important;
	text-underline-offset: .15em;
}